. >> you come down in different places to spend money, and then kind of get another tax on that. unfortunately it's kind of what's going on. i can't say i'm happy about it. reporter: a ticket is $62, and downtown is 72 tuesday. sunday enforcement is expected to generate $2 million a year. live in san francisco, abc7 news. >> ama: starting tomorrow, the golden gate bridge will begin changing to electronic tolling. toll collectors wilt still man the booths but once the system is validated, cash will no longer be accepted the bridge, just fast track and etoll. the etoll system should be up and running by february. etoll is projected to save $19 million over eight years. >>> a change is also coming to the broadway none san francisco. the tunnel's 60-year-old ventilation system will be replaced in octopi a digital company -- carbon monoxide monitor. the monitor will cost a million dollars. the fans in the opportunity are so old the spare parts to fix them no longer exist. >> still to come, tragedy in brazil. hundreds killed after a fire tears through a nightclub. tonight what survivor